On Tue, Mar 10, 2020 at 02:54:16PM -0400, Lyude Paul wrote:
> i915 can enable aux device nodes for DP MST by calling
> drm_dp_mst_connector_late_register()/drm_dp_mst_connector_early_unregister(),
> so let's hook that up.
>
> Changes since v1:
> * Call intel_connector_register/unregister() from
> intel_dp_mst_connector_late_register/unregister() so we don't lose
> error injection - Ville Syrjälä
>
> Cc: Ville Syrjälä <ville.syrj...@linux.intel.com>
> Cc: Manasi Navare <manasi.d.nav...@intel.com>
> Cc: "Lee, Shawn C" <shawn.c....@intel.com>
> Signed-off-by: Lyude Paul <ly...@redhat.com>
> ---
> drivers/gpu/drm/i915/display/intel_dp_mst.c | 28 +++++++++++++++++++--
> 1 file changed, 26 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/display/intel_dp_mst.c
> b/drivers/gpu/drm/i915/display/intel_dp_mst.c
> index d53978ed3c12..9311c10f5b1b 100644
> --- a/drivers/gpu/drm/i915/display/intel_dp_mst.c
> +++ b/drivers/gpu/drm/i915/display/intel_dp_mst.c
> @@ -548,12 +548,36 @@ static int intel_dp_mst_get_ddc_modes(struct
> drm_connector *connector)
> return ret;
> }
>
> +static int
> +intel_dp_mst_connector_late_register(struct drm_connector *connector)
> +{
> + struct intel_connector *intel_connector = to_intel_connector(connector);
> + int ret;
> +
> + ret = drm_dp_mst_connector_late_register(connector,
> + intel_connector->port);
> + if (ret < 0)
> + return ret;
> +
> + return intel_connector_register(connector);
Don't we have to undo the damage if this fails?
> +}
> +
> +static void
> +intel_dp_mst_connector_early_unregister(struct drm_connector *connector)
> +{
> + struct intel_connector *intel_connector = to_intel_connector(connector);
> +
> + intel_connector_unregister(connector);
> + drm_dp_mst_connector_early_unregister(connector,
> + intel_connector->port);
> +}
> +
> static const struct drm_connector_funcs intel_dp_mst_connector_funcs = {
> .fill_modes = drm_helper_probe_single_connector_modes,
> .atomic_get_property = intel_digital_connector_atomic_get_property,
> .atomic_set_property = intel_digital_connector_atomic_set_property,
> - .late_register = intel_connector_register,
> - .early_unregister = intel_connector_unregister,
> + .late_register = intel_dp_mst_connector_late_register,
> + .early_unregister = intel_dp_mst_connector_early_unregister,
> .destroy = intel_connector_destroy,
> .atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
> .atomic_duplicate_state = intel_digital_connector_duplicate_state,
> --
> 2.24.1
--
Ville Syrjälä
Intel
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